Garfield township represents an area within the Garfield township subdivision of the Roberts County (South Dakota),
which is not part of any official city, town or other place of the Garfield township subdivision.
This area is populated by approximatelly 146 people and occupies the area of 36 square miles - 1 square miles represent water areas.
Racial makeup of the population is : White (98.63%), Two or More races (0.68%) and Some Other Race (0%).
The male part of the population has a median age of 47 and the “median female” is 50 years old.

Statistical data for the Garfield township based on the 2010 U.S. Census